html,
body {
    margin: 0;
    padding: 0;
    background-color: black;
    width: 1920px;
    height: 1080px;
}

#dhl {
    display: none;
    width: 50px;
    height: 150px;
    position: fixed;
    z-index: 999999;
    right: 50px;
    bottom: 500px;
}

li {
    list-style: none;
    width: 50px;
    height: 50px;
    /* background-color: #56B4F8; */
    text-align: center;
    line-height: 50px;
    border-radius: 50%;
    margin-top: 20px;
    background-image: url(../img/导航栏静.png);
}

li a {
    text-decoration: none;
    color: blue;
}

a {
    text-decoration: none;
}

.color_a {
    color: blue;
    cursor: pointer;
}

.iconfont {
    font-size: 30px;
    color: red;
}

li:hover {
    background-image: url(../img/导航栏动.gif);
    line-height: 50px;
    text-align: center;
    width: 50px;
    height: 50px;
}

#Tanchu {
    width: 50px;
    height: 50px;
    position: fixed;
    z-index: 999;
    right: 50px;
    bottom: 150px;
    text-align: center;
    line-height: 50px;
    border-radius: 50%;
    background-image: url(../img/导航栏静.png);
    cursor: pointer;
}

#Tanchu:hover {
    background-image: url(../img/导航栏动.gif);
}

#container {
    width: 1920px;
    height: 1080px;
}

#water_bar_trend {
    position: absolute;
    width: 716.75px;
    height: 359px;
    z-index: 999999;
    right: 100px;
    bottom: 50px;
    display: none;
    background-color: white;
}